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2006-Present Pushrod VVT

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    SappySE107
    WOT-Tech

  • LZ4 vs LZ9 Connecting Rods

    LZ4 vs LZ9 Connecting Rods

    Too many resources have shown the rod length to be 5.9" for both motors. We have known for a long time that the 3900 LZ9 rod is 5.827" long from measurements, but the LZ4 was kind of a mystery even now in 2023. Maybe its out there, but most people want to build the bigger motor. However, there is something more to these motors than to think of them like bigger 2.8/3.1 motors. Unlike the 2.8 and 3.1, the difference is the stroke and rod, not stroke and pistons.

    Having both...
    See more | Go to post
  • bszopi
    Site Coder

  • 3900 Engine Specifications

    Mechanical specifications and fastener tightening specifications for the 3900 engine....
    See more | Go to post
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  • LZ4 vs LZ9 Connecting Rods
    SappySE107
    WOT-Tech
    by SappySE107
    Too many resources have shown the rod length to be 5.9" for both motors. We have known for a long time that the 3900 LZ9 rod is 5.827" long from measurements, but the LZ4 was kind of a mystery even now in 2023. Maybe its out there, but most people want to build the bigger motor. However, there is something more to these motors than to think of them like bigger 2.8/3.1 motors. Unlike the 2.8 and 3.1, the difference is the stroke and rod, not stroke and pistons.

    Having both...
    05-27-2023, 06:52 AM
  • 3900 Engine Specifications
    bszopi
    Site Coder
    by bszopi
    Mechanical specifications and fastener tightening specifications for the 3900 engine....
    09-29-2010, 08:27 PM
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